Heidi Allen
Main Page: Heidi Allen (Liberal Democrat - South Cambridgeshire)
Chris Heaton-Harris
The best way to suppress the noise is to turn the turbine off for the period of time when the noise is likely to occur. As acousticians have demonstrated to me, the noise is more likely to occur at night when other background noises have dropped down. We can predict it, because we know which way the wind is blowing and at what speed. It drops down to ground level in a certain way, so we can know exactly which houses and which zone it will affect. Therefore, with sensible meteorological readings using the correct monitoring equipment, which is now remarkably cheap to purchase—it used to cost an awful lot—we can do a lot better.
Chris Heaton-Harris
I will give way to my hon. Friend, who has a vast amount of experience in this area.
Heidi Allen
Not me personally, but certainly the residents in my constituency have. Everything my hon. Friend has said is right. I find it staggering, given that the world of physics and wave technology is well understood, that amplitude modulation should suddenly be a surprise to us in relation to wind farms. It is a natural occurrence of wave technology. We have a wide knowledge and evidence base in my constituency, mostly because of Cotton Farm wind farm, which is just outside my constituency in Huntingdon. The residents have been blighted for years by the wind farm. They cannot sell their houses and they cannot open their windows. The data are available and the Government would be wise to make use of them and incorporate them in their review.
Chris Heaton-Harris
I thank my hon. Friend for her contribution and I agree with her. I have been to Cotton Farm to see the wind farm for myself and to meet some of the residents. I met the illustrious Bev Gray—I do not know if he is a constituent of my hon. Friend—who has provided me with more information than any man could ever possibly want about amplitude modulation readings and the noise his community suffers on a regular basis. As my hon. Friend suggests, this is not rocket science. Where there is amplitude modulation, people suffer and genuine health concerns have for too long been swept under the carpet.
The Den Brook planning condition, as it has become known, was a chance to introduce a sensible planning condition that evoked amplitude modulation and tried to deal with it. The wind industry could have welcomed it as a method to defeat wind farm opponents across the country who say “You don’t deal with the problem of wind” by saying, “We understand there is a problem with wind noise, and we will deal with it and mitigate it when it happens.” Instead, the industry went into complete denial and actual upfront aggressiveness. It fought the planning condition through the courts over an eight-year period to ensure that it was not applied, and to get it removed and then sufficiently weakened so as to make it pretty pointless if it were ever to return. In fulfilling our manifesto commitment and making this change to the renewables obligation as of the end of the month, I suggest that we also bring forward the appropriate planning conditions to address the problem of amplitude modulation and make wind developers and farms a bit more acceptable in the parts of the country where they already exist.